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Shellac functions as a tough natural primer, sanding sealant, tannin-blocker, odour-blocker, stain, and high-gloss varnish. Shellac was once used in electrical applications as it possesses good insulation qualities and seals out moisture. Phonograph and 78 rpm gramophone records were made of shellac until they were gradually replaced by vinyl ...
Well known resins include amber, hashish, frankincense, myrrh and the animal-derived resin, shellac. Resins are commonly used in varnishes, adhesives, food additives, incenses and perfumes. Resins protect plants from insects and pathogens, and are secreted in response to injury. [2]
Many different kinds of resins may be used to create a varnish. Natural resins used for varnish include amber, kauri gum, dammar, copal, rosin (colophony or pine resin), sandarac, balsam, elemi, mastic, and shellac. Varnish may also be created from synthetic resins such as acrylic, alkyd, or polyurethane. A varnish formula might not contain any ...
Amber is heterogeneous in composition, but consists of several resinous bodies [clarify] more or less soluble in alcohol, ether and chloroform, associated with an insoluble bituminous substance. Amber is a macromolecule formed by free radical polymerization [22] of several precursors in the labdane family, for example, communic acid, communol ...
Chinese rosin is obtained mainly from the turpentine of Masson's pine Pinus massoniana and slash pine P. elliottii. [citation needed] The latter species is native to the southeastern U.S., but is now widely planted in tree plantations in China. The South Atlantic and eastern Gulf states of the United States is a second chief region of production.
The word lac is derived from the Sanskrit word lākshā '(लाक्षा) representing the number 100 thousand, which was used for both the lac insect (because of their enormous number) and the scarlet resinous secretion it produces that was used as wood finish, lacquerware, skin cosmetic, ornaments and dye for wool and silk in ancient India and neighbouring areas.
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Kauri gum was also crafted into jewellery, keepsakes and small decorative items. Like amber, kauri gum sometimes includes insects and plant material. [7] Kauri gum was used commercially in varnish, and can be considered a type of copal (the name given to resin used in such a way). Kauri gum was particularly useful for this, and from the mid ...